<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8" />
    <title>Hello React!</title>
    <script src="https://cdn.bootcss.com/react/15.4.2/react.min.js"></script>
    <script src="https://cdn.bootcss.com/react/15.4.2/react-dom.min.js"></script>
    <script src="https://cdn.bootcss.com/babel-standalone/6.22.1/babel.min.js"></script>
</head>
<body>
<div id="example"></div>
<script type="text/babel">
    var Hello = React.createClass({
        getInitialState: function(){
            return{
                opacity: 1.0
            };
        },
        componentDidMount:function(){
            this.timer = setInterval(function(){
                var opacity = this.state.opacity;
                opacity -= .05;
                if(opacity < 0.1){
                    opacity = 1.0;
                }
                this.setState({
                    opacity:opacity
                });
            }.bind(this),100);
        },
        render: function(){
            return (
                <div style={{opacity: this.state.opacity}}>
                    Hello {this.props.name}
                </div>
            );
        }
    });
    ReactDOM.render(
            <Hello name="world" />,
        document.getElementById('example')
    );
</script>
</body>
</html>